Specifications 1. Grade:201,303,304/L,316/L,317L,309,310,321 ... to 500mm 3. Form:Round square Basic Info. Model NO.: 201, 301, 302, 304, 304L, 316, 316L, 321, 309, ... be produced according to drawing and sample 3. Material Grade 201, 301, 302, 303, 304, 304L, 316, 316L, 321, 309S ... Time 20 days or depend on order quantity 13. Price Negotiable SIZE TOLERANCE OF ISO SPECIFICATION Dia. Or Distance Across ...